"A new analysis of licensing data shows that not only is use of the GPL and other copyleft licenses continuing to decline, but the rate of disuse is actually accelerating." This shouldn't be surprising. The GPL is complex, and I honestly don't blame both individuals and companies opting for simpler, more straightforward licenses like BSD or MIT-like licenses.

"They'll use OSS as a "base" and stick a proprietary icing on top. The problem here is that since the GPL is "viral", they don't want it to "infect" the proprietary code, thus forcing them to release it (I believe this has happened with the Linksys WRT router).

The GPL is not "viral", it applies ONLY to a package of code released by the author of that code under the GPL.
"

That's MPL. Anything you link with GPL'd software becomes contaminated and is also GPLd. That's one of the reasons why MacOSX doesnt carry GNU readline.